In the first part of this captivating two-part episode, the disappearance of a scientific genius, Dr. Alexander Kline, sends shock-waves through the islands

ON FANCAST

PLAY

Steve encounters resistance from federal agents when he attempts to uncover the mystery behind a research scientist’s sudden disappearance from his important government post

ON FANCAST

PLAY

Tom Skerritt (who later starred as the sheriff on TV’s Picket Fences) appears as a cop whose wife has been murdered

ON FANCAST

PLAY

Martin Sheen is featured in this episode that centers around Chin Ho Kelly, one of McGarrett’s most trusted investigators

ON FANCAST

PLAY

After a crooked card game leads to the murder of a young honeymooner, the victim’s brother sets out to find the man responsible

ON FANCAST

PLAY

A Vietnam vet is revealed to be behind the kidnappings of several local children

ON FANCAST

PLAY

Christopher Walken guest stars in this tense episode about an AWOL sailor accused of shooting a Navy shore patrolman

ON FANCAST

PLAY

After an adversary from McGarrett’s past robs a bank under the noses of the Five-0 team, McGarrett follows a trail from Hawaii to Hong Kong to nail the brilliant thief

ON FANCAST

PLAY

The stakes are murderously high when a beach boy and a playboy vie for the attentions of a seductive heiress in a bizarre card game

ON FANCAST

PLAY

After a kidnapped boy escapes his captors, the boy’s father enlists the Five-0 squad to recover his ransom money from the extortionists

ON FANCAST

PLAY

When the plane carrying a despised dictator is forced to make an emergency landing in Hawaii, the notorious leader is marked for death…and it’s up to the Five-0 team to protect him

ON FANCAST

PLAY

Enlisted to investigate an ex-racketeer suspected of heading a local crime syndicate, McGarrett follows a hunch that the politician seeking to indict the accused man is involved in some dirty dealings of his own

ON FANCAST

PLAY

After the robe of King Kamehameha, one of Hawaii’s most treasured symbols, is stolen, McGarrett traces the theft to a group of anti-establishment university students

ON FANCAST

PLAY

When Hawaii’s sugar industry is threatened by a terrorist who plans to use germ warfare, the Five-0 team springs into action to stop the sabotage

ON FANCAST

PLAY

A psychology professor and disciple of Wo Fat is using the power of hypnosis to turn citizens into assassins

ON FANCAST

PLAY

After a band of foreign revolutinaries steal weapons from an armory, McGarrett mobilizes the Five-0 force to bring down the terrorists

ON FANCAST

PLAY

A prostitute has been murdered by a gangster, but the sole witness to the crime - a respectable small-town hardware salesman - is afraid to testisfy

ON FANCAST

PLAY

Fear spreads through Hawaii after rumors of an imminent tidal wave, but McGarrett discovers the true threat; villainous Red Chinese agent Wo Fat

ON FANCAST

PLAY

The Five-0 team racess against time to find a ticking time bomb hidden by a Japanese mental patient determinded to carry out the mission he was assigned 28 years earlier

ON FANCAST

PLAY

After the brides of three G.I.s killed in Vietnam turn up dead, Steve McGarrett uncovers an insurance scam run by a soldier with a murderous grudge

ON FANCAST

PLAY

McGarrett's attmept to prove he's an officer-of-the-peace, after a protester is shot during an anti-war demonstration, is met with resistance from the slain man's pacifist associates

ON FANCAST

PLAY

McGarrett wages a one-man battle to collect evidence that will prove to his sister- and the local authorities - that the doctor who treated his nephew is a fraud

ON FANCAST

PLAY

McGarrett flies to Los Angeles to investigate a quack doctor he suspects is victimizing his sister and her cancer sticken infant

ON FANCAST

PLAY

McGarett rushes to find a young prize fighter's killer, before the deceased boxers father, a Maui policeman, exacts his own brand of justice

ON FANCAST

PLAY

After an aging baroness disappears, her two nephews become key suspects in a surprise-filled case that pits McGarrett against a serial killer

ON FANCAST

PLAY

The Five-0 team races against time to track down the source of a bubonic plague outbreak which is threatening the Islands

ON FANCAST

PLAY

Danno poses as a surfer to infiltrate a professor-turned-gurus's circle, who may me dispensing more than just notions of peace and love to his followers

ON FANCAST

PLAY

McGarett must devise a battle plan to rescue a shot Danno from a derganed soilders commandeered hospital room

ON FANCAST

PLAY

A female student at the Pacific Culutral Institute is strangled and all the evidence points to her boyfriend until a little girl's "fish story" leads the investigation in another direction

ON FANCAST

PLAY

McGarrett must make sure his key witness, a mobster's associate, lives to testify against the crime kingpin

ON FANCAST

PLAY

McGarrett lands a big case when he discovers a fishing boat owner is smuggling gold bars into Hawaii

ON FANCAST

PLAY

McGarett must prove his second-in-command, Danno, is innocent of shooting an unarmed teenage supsect

ON FANCAST

PLAY

McGarrett and his squad must protect a crime boss, facing prosecution, from a society of Japenese assassins

ON FANCAST

PLAY

A native's love of his unspoiled homeland, a mysterious woman with a camera, a man with a briefcase, and a millionaire industrialist are pieces of the strange puzzle confronting McGarrett

ON FANCAST

PLAY

Steve McGarrett is assigned by the governor of Hawaii to break up a confidence racket that is bilking rich visiting widows of their fortunes

ON FANCAST

PLAY